as a method of "hugelkultur", by putting them in the soil either under or around whatever you are planting, hollow side up. This would create little "buckets" to hold water, and slowly rot away over time, normally by which time the tree will be more able to retrieve its water from deeper in the subsoil. Cheers.
Remember to always leap before you look. But always take the time to smell the tiny ads:
Quit your workee-job and live, year round, for free-ish in Montana
1
